A car car is washed up against a tree in Cyprus Creek
A car is pictured washed up against a tree in Cyprus Creek, a tributary of the Blanco River, Texas Reuters

Darren Mitchell, a 21-year-old National Guardsman who took a picture from the inside of his flooded truck and uploaded it to Facebook, has been found dead. He had added a caption which read: "And all I wanted to do was go home." His body was discovered a mile downstream from his overturned vehicle on Saturday (28 May) according to his sister.

Mitchell had called to tell his family that he was trapped in flood waters on Highway 105 on the outskirts of Brenham on Thursday, according to KHOU. "[My brother] just said he was all right and he made it out of the truck," Ro Mitchell said.

However, Lashandoe Smith, an eyewitness, said she watched the tragic events unfold when Mitchell's truck was swept into the water.

"He got out of his truck, he got in the bed of his truck, he got back out, on top of his truck, and then all of the sudden he got back in his truck. And like maybe 10-15 minutes after he was in his truck, it just flipped and he topsided into the water. It just disappeared. Once it flipped, you didn't see tyres, his truck, nothing. It just tumbled over."

Rescue teams searched by helicopter and boat but the search was called off on Friday when fierce storms impeded their progress.

The floods have already claimed the lives of four people with at least three others missing in Texas and Kansas. The search for Devon Cooley, an 11-year-old boy, continued on Sunday after he slipped and fell into a creek while he was crossing a footbridge in Kansas. The chances of finding him alive were slim. "We are more in body recovery mode than rescue," Wichita Fire Department battalion chief Scott Brown told KSNW.

Texas authorities were evacuating around 2,600 inmates from two prisons due to flood warnings along the Brazo river, to the south of Houston.

National Guardsman Darren Mitchell
National Guardsman Darren Mitchell posted this picture from inside his submerged truck on Facebook Facebook: Darren Mitchell